ENERGY USE
SCIENCE 101
SPRING 1999
By the end of this section you need to be able to address the following:
  1. Why must you and all organisms (including plants!) "breathe" in order to stay alive?
  2. Compare the energy-producing efficiency of aerobic metabolism with that of glycolysis and fermentation.
  3. What are the reactants and products of glycolysis?  the Kreb's cycle?  the electron transport system?
  4. How does carbon monoxide and other respiratory poisons cause death?
  5. Where in the cell does glycolysis, fermentation, and aerobic respiration occur?
  6. How is ATP used by a cell?  What happens to excess ATP produced in animals?  in plants?
  7. What is the function of NADH and NADPH2 ?
  8. How do electron transport systems produce ATP?
  9. When and where is ATP produced during photosynthesis?  cellular respiration?
  10. What are the advantages and disadvantages of making ATP by fermentation?
  11. In what ways are the processes of respiration and photosynthesis similar?  different?  Why is it not surprising that many aspects of these pathways are similar?
  12. How would you explain to a fried the functions and differences between photosynthesis and respiration, using plants as an example for each process?
  13. Would you expect the earliest organisms on earth to have been aerobes or anaerobes?  Why?
  14. If organisms had never evolved the ability to photosynthesize, what type of cellular respiration would you expect organisms to carry out?  In what ways would you expect the organisms on earth to be different if the ability to photosynthesize had never evolved?
  15. You often hear of the dependence of animals on plants.  In what ways are plants dependent on animals?